Dwarf, wharf.
ARGE.
Barge, charge, large, marge, targe,† discharge, o'er-charge, surcharge, enlarge.
ARK.
Ark, bark, cark,† clark, dark, lark, mark, park, chark,† shark, spark, stark, embark, remark, etc.
ARL.
Carl,† gnarl, snarl, marl, harl,¶ parle.†
ARM.
(As in "arm"), arm, barm, charm, farm, harm, alarm, disarm. (As in "warm"), warm, swarm, storm, etc.
ARN.